Are lightning bugs toxic to robin birds?

Lightning bugs, or fireflies, contain chemicals called lucibufagins that can be toxic to some animals, including birds like robins. While robins may consume them, the toxins can lead to digestive issues or even more severe health problems if ingested in large quantities. However, robins typically avoid eating them due to their unpalatable taste and the potential for toxicity. Overall, while not a primary food source, lightning bugs can pose a risk to robins if consumed.